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Selection of the conodont Idiognathodus simulator (Ellison) as the event marker for the base of the global Gzhelian Stage (Upper Pennsylvanian, Carboniferous)
Newcomen-type pumping engines in collieries and ironworks on the north side of the Don valley in the Rotherham area of South Yorkshire in the eighteenth century
MICROCHEMICAL IDENTIFICATION AND DIFFERENTIATION OF AMARYLLIDACEAE ALKALOIDS PART II: TRISPHERIDINE, 6--ETHOXYBUPHANISINE, 6--ETHOXYCRININE, 3-O-ACETYLPOWELLINE, 3-O-ACETYLCRININE, CHERYLLINE, FLEXININE, BULBISINE AND AUGUSTISINE